Post-sale Total — The Headline Figure in Auction Reporting
Post-sale Total — The Headline Figure in Auction Reporting
What the published total includes, what it excludes, and how the trade reads it
The post-sale total is the aggregate of all hammer prices plus buyer's premiums for lots sold during a public auction, reported in the auction house's post-sale press release as the headline figure for the sale. The total reflects gross transaction value during the public bidding session and is the standard benchmark by which sales are compared against pre-sale estimates, against prior comparable sales, and against the sale's own reserves. Major auction houses including Christie's, Sotheby's, Bonhams, and Phillips publish post-sale totals as part of their standard sale reporting workflow.
What the total includes
The post-sale total includes every lot sold during the public auction, calculated as hammer price plus buyer's premium and applicable local taxes where relevant to the published figure. The hammer price is the final accepted bid as called by the auctioneer; the buyer's premium is the auction house's commission charged to the buyer over and above the hammer price, calculated on a tiered scale defined in the conditions of sale. The combined hammer-plus-premium figure is the price the buyer actually pays for the lot.
For a sale with one hundred lots offered, the total includes only those lots that were sold; bought-in lots are excluded. The total typically includes a count of lots sold and the sell-through rate (sold lots as a percentage of offered lots) as supporting figures, allowing readers to interpret the headline number in context.
What the total excludes
The post-sale total excludes several categories of transaction that may be associated with the sale. Bought-in lots are excluded entirely, as are any post-sale private transactions on those bought-in lots that may close in the days and weeks after the public auction. Private-sale department transactions running in parallel with the auction are reported separately if at all. Conditional sales (lots sold subject to acceptance of a bid below the reserve, where the consignor's post-sale acceptance is required) may be included or excluded depending on the house's reporting convention.
The total also excludes the specifics of consignor commission, royalty payments to artists' estates (where applicable), and other internal accounting that affects the net realised by the consignor. The buyer's-premium portion of the total is gross revenue to the auction house, not to the consignor, so the headline total overstates what flows back to consignors in aggregate.
Use in market reporting
The post-sale total is the primary figure cited in trade-press reporting on auction results, used to compare sales against pre-sale low and high estimates, against prior season totals, and against competing houses' equivalent sales. The auction houses themselves report aggregate annual sales totals across all categories as a measure of business performance, with jewellery and watch segments reported separately within the overall figures.
The Christie's, Sotheby's, and Bonhams quarterly and annual reporting cycles publish category breakdowns that the trade uses to track segment performance over time. The Bain & Company Luxury Goods studies, the Knight Frank Luxury Investment Index, and the Art Basel and UBS Art Market Report all draw on auction-house reported totals to construct broader market indicators.
Caveats in interpretation
Comparing post-sale totals across sales requires care. A higher total does not necessarily indicate a stronger sale: it may reflect a higher proportion of high-value lots, higher reserves, or a smaller catalogue with concentration on flagship pieces. The sell-through rate, the average lot price, and the proportion of lots exceeding their high estimate are supporting figures that the trade uses alongside the headline total to evaluate sale performance. The hammer-only total (excluding buyer's premium) is sometimes reported separately and is the figure that compares more directly across houses with different premium structures.
In the trade
For dealers, consignors, and clients, the post-sale total is the starting point for evaluation rather than the conclusion. Specific lot results within the total — particularly for stones or pieces comparable to one's own holdings — are typically more informative than the headline figure for purposes of valuation work and market intelligence. The auction houses publish lot-by-lot results alongside the totals, and dealers routinely work from the lot detail rather than the aggregate.